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/*
* ContainerUMX.cpp
* ----------------
* Purpose: UMX (Unreal Music) module ripper
* Notes : Obviously, this code only rips modules from older Unreal Engine games, such as Unreal 1, Unreal Tournament 1 and Deus Ex.
* Authors: OpenMPT Devs (inspired by code from http://wiki.beyondunreal.com/Legacy:Package_File_Format)
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#include "stdafx.h"
#include "Loaders.h"
#include "UMXTools.h"
#include "Container.h"
#include "Sndfile.h"
OPENMPT_NAMESPACE_BEGIN
CSoundFile::ProbeResult CSoundFile::ProbeFileHeaderUMX(MemoryFileReader file, const uint64 *pfilesize)
{
return UMX::ProbeFileHeader(file, pfilesize, "music");
}
bool UnpackUMX(std::vector<ContainerItem> &containerItems, FileReader &file, ContainerLoadingFlags loadFlags)
{
file.Rewind();
containerItems.clear();
UMX::FileHeader fileHeader;
if(!file.ReadStruct(fileHeader) || !fileHeader.IsValid())
return false;
// Note that this can be a false positive, e.g. Unreal maps will have music and sound
// in their name table because they usually import such files. However, it spares us
// from wildly seeking through the file, as the name table is usually right at the
// start of the file, so it is hopefully a good enough heuristic for our purposes.
if(!UMX::FindNameTableEntry(file, fileHeader, "music"))
return false;
else if(!file.CanRead(fileHeader.GetMinimumAdditionalFileSize()))
return false;
else if(loadFlags == ContainerOnlyVerifyHeader)
return true;
const std::vector<std::string> names = UMX::ReadNameTable(file, fileHeader);
const std::vector<int32> classes = UMX::ReadImportTable(file, fileHeader, names);
// Read export table
file.Seek(fileHeader.exportOffset);
for(uint32 i = 0; i < fileHeader.exportCount && file.CanRead(8); i++)
{
auto [fileChunk, objName] = UMX::ReadExportTableEntry(file, fileHeader, classes, names, "music");
if(!fileChunk.IsValid())
continue;
ContainerItem item;
if(objName >= 0 && static_cast<std::size_t>(objName) < names.size())
{
item.name = mpt::ToUnicode(mpt::Charset::Windows1252, names[objName]);
}
item.file = fileChunk;
containerItems.push_back(std::move(item));
}
return !containerItems.empty();
}
OPENMPT_NAMESPACE_END
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